公开(公告)号：EP4462817A1

公开(公告)日：2024-11-13

申请号：EP23918891.5

申请日：2023-11-30

申请人： Shenzhen Dancing Future Technology Ltd.

发明人： WANG, Chuanbo ,  DENG, Hongguo ,  CHEN, Qifeng

IPC分类号： H04R9/06 ,  H04R9/02

摘要： An acoustic output apparatus and an earphone, including: a first diaphragm, a driving component, a second diaphragm and a housing structure, where a space between the second and first diaphragms close to the driving component forms a first cavity with the housing structure; a space between the electroacoustic transducer and the second diaphragm forms a second cavity with the housing structure; and in a working state, the driving component drives the first diaphragm to vibrate so as to cause the second diaphragm to passively vibrate, and a volume of the second cavity is not greater than 1/5 of an equivalent volume of the electroacoustic transducer.

公开(公告)号：EP4462815A1

公开(公告)日：2024-11-13

申请号：EP22961833.5

申请日：2022-10-19

申请人： Shenzhen Dancing Future Technology Ltd.

发明人： WANG, Chuanbo ,  DENG, Hongguo ,  LI, Haoqian

IPC分类号： H04R9/06

摘要： An acoustic device (3) is provided, including a housing (10), and a sound source (20) disposed in the housing (10), where the housing (10) is provided with a sound outlet hole (11) and a reverse-phase sound hole (12) in different surfaces of the housing (10), and sounds emitted from the sound outlet hole (11) and from the reverse-phase sound hole (12) are opposite in phase and identical in amplitude; a first sound cavity (15) is formed between a front end of the sound source (20) and the sound outlet hole (11), and a second sound cavity (16) is formed between a rear end of the sound source (20) and the reverse-phase sound hole (12); and the first sound cavity (15) is communicated with the second sound cavity (16) through an acoustic dipole tube (17). The first sound cavity (15) is formed between the sound outlet hole (11) and the sound source (20), the second sound cavity (16) is formed between the reverse-phase sound hole (12) and the rear side of the sound source (20), and the first sound cavity (15) is communicated with the second sound cavity (16) through the acoustic dipole tube (17), such that sounds with identical amplitudes and opposite phases are coupled inside the acoustic device (3), and the size of the acoustic dipole tube (17) and an acoustic damping value provided on the acoustic dipole tube (17) are adjusted so as to achieve the purpose of adjusting the size of sound coupling, thereby effectively inhibiting sound leakage.